Attendanceatfootballmatcheshave_____sincethecomingoftelevision.

________ the concert had begun did we realize what a splendid show it was going to be.

________,Johnhasbeentoseveralforeigncountries.

Since William had been seriously ill for several months, his parents were worried about________ to return to school full-time.

A baby might show fear of an unfamiliar adult, _______ he is likely to smile and reach out to another infant.